Buttonhole-cutting mechanism.



PATENTED AUG. 14,1906.

J. KIEWIGZ. 'BUTTONHOLE CUTTING MECHANISM.

APPLICATION FILED APR. 27. 1905.

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Inventor: %42- fawn/asses:

TH: NORRIS PETERS ca No. 828,410. PATENTED AUG. 14, 1906. J. KIEWIGZ.

BUTTONHOLB GUTTIN G MECHANISM.

APPLICATION PILEVD'APR. 27. 1905. I

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No. 828,410. 'PATENTED AUG. 14, 1 906.

' J. KIEWIOZ. w

BUTTONHOLE CUTTING MECHANISM. APPLICATION FILED APR. 27. 1905.

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witnesses Inventor":

NITED STATES PATENT OFFICE.

JOHN KIEWICZ, OF HYDE PARK, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGNMENTS, TO WHEELER MANUFACTURING COMPANY, A CORPO- RATION OF MAINE.

BUTTONHOLE-CUTTING MECHANISM- Specification of Letters Patent.

Patented Aug. 14;, 1906.

Application filed April 27, 1905; Serial No. 257,682.

To all whom it may concern:

Be it known that I, JOHN KIEwIoz, a subject of the Czar of Russia,residing at Hyde Park, in the county of Norfolk and State ofMassachusetts, have invented new and useful Improvements inButtonhole-Cutting Mech-' anism, of which the following is aspecification.

ple, cheap, and convenient mechanism for cutting buttonholes, whichmechanism is easily operated by hand, the same being particularlyadapted to be used in connection with a machine for sewing buttonholes.

The invention consists in certain improvements in mechanism for cuttingbuttonholes in fabric, as set forth in the following specification andparticularly pointed out in the claims thereof. 4

Referring to the drawings, Figure 1 is a front elevation of the frame ofa buttonholesewing machine, together with a portion of the mechanismthereof, with my improved buttonhole cutting mechanism attached thereto.Fig. 2 is aside elevation of the same, partly in section, as viewed fromthe left of Fig. 1, with the fabric-clamp attached thereto and inposition to begin the sewing of a buttonhole. Fig. 3 is an underneathplan of the same with the main driving-shaft shown in section and all ofthe mechanism removed from the machine with the exception of thebuttonhle-cutting mechanism.

Like numerals refer to like parts throughout the several views of thedrawings,

In the drawings, is the frame of a buttonhole-sewing machine.

16 is the work-plate fastened to the bedplate 17 of the frame 15, and tosaid workplate is fastened a cylindrical needle-throat 18. Afabric-clamp 19 holds the fabric in position to be out by the mechanismhereinafter described, said clamp being rotated around the needle-throatby any suitable mechanism in a manner well known to those skilled inthis art.

The buttonhole is out in the fabric by 'means of two cutters andmechanism to move said cutters toward each other. The cutter locatedabove the bed-plate is a reciprocatory cutter, while that locatedbeneath the This invention relates to an improved mechanism for cuttingbuttonholes, the ob; ject of the invention being to provide asimbed-plate is a rocking cutter. The upper cutter 20 is fastened to areciprocatory slide 21, consisting, preferably, of a cylindrical barguided in ways 22, formed in the frame of the machine. A cam 23 isrotatably mounted upon the slidable rod 21, said cam having an inclinedface 24, adapted to engage an incline 25, formed upon the under side ofa plate 26, fast to the frame of the machine. The cam 23 has an arm 27,fast thereto, provided with a handle 28. By pressing downwardly upon thearm 27 or handle 28 the cam 23 will carry the slide 21 downwardly, saidcam being free to rotate upon the slide 21, but prevented fromlongitudinal movement thereon by a shoulder 29, formed upon the slide 21and by a nut 30, fast to the upper end thereof.

It will be seen that when the slide 21'has been sufliciently lowered sothat the inclined face 24 comes substantially in alinement with theincline 25, formed upon the under side of the plate 26, if a rotarymovement is imparted to the cam 23 the inclined face 24 will contactwith the incline 25 upon the fixed plate 26, and a continued rotation ofthe cam 23 will cause the slide 21, together with the upper cutter 20,to be forced downwardly, cooperating with the lower cutter, ashereinafter described, to cut a buttonhole in the fabrio which isinterposed between the upper and lower cutters.

The lower cutter 31 is fastened to an arm 32, pivotally supported upontwo studs 33 33 on the frame of the machine, Fig. 3. A rotary cam-lever34 is pivoted to a stud 35, fast to the bed-plate 17 Said lever has aninclined cam-face 36, adapted to engage an incline 37, formed upon thearm 32 when said cam-lever is rotated, and the rotation of saidcam-lever is secured by a link 38, pivotally connected at one end to anarm 39 of the cam-lever 34 and at the other end thereof to a lever 40,pivoted at 41, Fig. 1, to the frame 15 and projecting downwardlytherefrom through a slot 42, formed in the bed-plate 17. The upperleft-hand end of the lever 40 abuts against the under side of an arm 43,fast to the slide 21, and is kept in contact with said arm by a spiralspring 44, fast at one end to the frame of the machine and at the otherend to the link 38, Fig. 3. The cutters 20 and 31 are both removablefrom their respective carriers in order that cutters of differentlengths for different-sized buttonholes may be used in the machine.

The operation of the cutting mechanism hereinbefore specificallydescribed is as follows: The fabric is held in position by thefabric-clamp 19 upon the top of the workplate 16. The operator moves theslide 21 and upper cutter 2O downwardly by means of the arm 27 andhandle 28. As said slide is pushed downwardly in this manner the lever40 is rocked upon its pivot by the arm 43, fast to said slide 21, andthrough the link 38, which is thus moved toward the right, Fig. 3, the

lower cutter 31 is rocked by its carrying-arm 32, the incline 36 ridingup on the incline 37, thus rocking the arm 32 upon its pivotal studs 33and forcing the lower cutter upwardly through the slot 45 in thework-plate 16 against the under surface of the fabric. The fabric is'now firmly gripped between the two cutters and the operator gives arotary motion to the cam 23, thus causing the incline 24 on said cam toride downwardly upon the incline 25, formed upon the under side of thestationary plate 26, and forcing the fabric downwardly, the lowersharp-edged die-cutter being thus forced through the fabric until itmeets the descending lower face of said upper cutter. It will beunderstood that during this last motion of the upper cutter the lowercutter remains stationary and the upper cutter forces the fabricdownwardly in a straight line against the cutting edge of the lowercutter.

It will be seen by reference to Fig. 1 that the cutters operate close tothe needle-throat .during the cutting of the fabric and that thefabric-clamp is in position to begin the sewing of the buttonhole assoon as the cutters are removed by reversing the motion of the cam 23,handle 28, and arm 27, hereinbefore described.

Having thus described my invention, what I claim, and desire by LettersPatent to secure, is

1. In abuttonhole-sewing machine, aworkplate provided with a slot, areciprocatory cutter located above said worlcplate, apivotally-supported cutter located beneath said work-plate, andmechanism connecting said upper and lower cutters, whereby said cuttersare moved toward or away from each other. i 2. In a buttonhole-sewingmachine a workplate provided with a slot, a reciprocatory slide locatedabove said work-plate, a cutter fast to said slide, a rotary partmounted upon said slide, and a stationary part fast to the frame of saidmachine, one of said parts having an inclined face adapted to engage theother of said parts, whereby said cutter is moved toward said work-plateduring the rotation of said rotary part.

3. In a buttonhole-sewing machine a workplate provided with a slot, areciprocatory slide located above said workplate, a cutter fast to saidslide, a cam rotatably mounted upon said slide, and a stationary partfast to the frame of said machine, said cam having an inclined faceadapted to engage said stationary part, whereby said cutter is movedtoward said work-plate during the rotation of said cam.

4:. In a buttonhole-sewing machine a workplate provided with a slot, areciprocatory slide located above said work-plate, a cutter fast to saidslide, a cam rotatably mounted upon said slide, a handle fast to saidcam, and a stationary plate, said cam and plate having inclined facesadapted to engage with each other, whereby said cutter is moved towardsaid workplate during the rotation of said cam.

5. In a buttonholesewing machine a work- .plate provided with a slot, areciprocatory slide located above said worlcplate, a cutter fast to saidslide, a rotary part mounted upon said slide, and a stationary part fastto the frame of said machine, one of said parts having an inclined face,adapted to engage the other of said parts, whereby said cutter is movedtoward said work-plate during the rotation of said rotary part, apivotally-supported cutter located beneath said workplate, and mechanismconnecting said slide and pivotally-supported cutter, whereby saidcutters are moved toward or away from each other.

6. In a buttonhole-sewing machine a workplate provided with a slot, areciprocatory slide located above said work-plate, a cutter fast to saidslide, a cam rotatably mounted upon said slide, and a stationary partfast to the frame of said machine, said cam having an inclined faceadapted to engage said stationary part, whereby said cutter is movedtoward said work-plate during the rotation of said cam, apivotally-supported cutter located beneath said work-plate, andmechanism connecting said slide and pivotally-supported cutter, wherebysaid cutters are moved toward or away from each other.

7. In a buttonhole-sewing machine a workplate provided with a slot, areciprocatory slide located above said work-plate, a cutter fast to saidslide in alinement with said slot, a pivotally supported arm, a cutterfast thereto beneath said work-plate, and mechanism connecting saidslide and arm whereby, when a reciprocatory motion is imparted to saidslide said arm will be rocked upon its pivot and said cutters will bemoved toward or away from each other.

8. In a buttonhole-sewing machine, a reciprocatory slide, a cutter fastthereto, a pivotally-supported arm, a cutter fast to said arm, and arotary lever having an inclined face adapted to engage the incline uponsaid arm during the rotation of said cam and move said arm and cuttertoward said slide and cutter.

[ work-plate by the rotation of said cam, a piv- 9. In abuttonhole-sewing machine a re- 1 otally-supported arm, a cutter fast tosaid ciprocatory slide, a cutter fast thereto, a pivotally-supportedarm, a cutter fast to said arm, a rotary cam having an inclined facearm, a rotary lever having an inclined face adapted to engage an inclineupon said arm, 5 adapted to engage an incline upon said arm, mechanismactuated by said slide to rotate and mechanism actuated by said slide torosaid last-named cam and move said arm and tate said cam and move saidarm and cutter cutter toward said slide and cutter. toward said slideand cutter. In testimony whereof I have hereunto set 10. In a buttonholesewing machine a my hand in presence of two subscribing wit- IOwork-plate provided witlila slot, a eciprocanesses.

tory slide, a cutter 'ast t ereto an in alinement with said slot, a camrotatably mount- JOHN KIEWIOZ' ed upon said slide, having an incline,adapted Witnesses: to engage a stationary part of said machine, CHARLESS. GOODING, I 5 whereby said cutter is moved toward said ANNIE J.DAILEY.

